Ansel



(No Mod-e1.)

1 A. S. BUOKELEW. 5 BALANCE WHEEL FOR WATGHES.

No. 330,558. Patented Nov. 17, 1885.

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' I A I 4 a H" 1 NH] I! |1 7 u (su 2v nil WITNESSES INVENTOR ATTORNEYSUNITED STATES PATENT O FICE,

ANSEL S. BUOKELEVV, OF JERSEY CITY, NEIV JERSEY.

BALANCE-WHEEL FOR WATCH ES.

SPECIFICATION forming part of Letters Patent No. 330,558, dated November17, 1885.

Serial No. 152,184. (No model.)

To all whom it may concern:

- Be it known that I, ANSEL S. BUoKELEW, of Jersey City, in the countyof Hudson and State of New Jersey, have invented certain new and usefulImprovements in BalaneeNVheels for Watches and Ohronometers, of whichthe following is a specification.

This invention has reference to an improved balance-wheel for watchesand ships chr0- nometers, with an accurately -working compensatingarrangement of cheap and simple construction; and the invention consistsof a balancewheel for watches and chronometers, the rim of which is madeof two sections, which are supported by a diametrical bar attached tothe arbor of the balance-wheel, while the opposite ends of therim-sections are connected by an arcshaped compensatingbar composed oftwo suitable metals. The compensating-bar is balanced either by acounter-weight attached to the diametrical bar, or by a secondcompensating-bar arranged symmetrically to the first bar.

In the accompanying drawings, Figures 1 and 2 represent top views of myimproved balance-wheel for watches and ships chronometers.

Similar letters of reference indicate corre sponding parts.

Referring to the drawings, A represents the circular rim of mybalance-wheel for watches and ships chronometers. The rim is made of twosections, a a, of brass or other suitable metahwhich sections areseparated from each other at the ends by short interstices. Two of theends of the rimsections a a are connected by a diametricalsupporting-bar, B, that is applied to the arbor C of the balance-wheel.The opposite ends of the rim-sections a a are connected by an arcshapedcompensating-bar, D, which is composed of two metals, the inner of whichis of steel and the outer of brass. The rim-sections are provided in thecustomary manner with adjustingweights or screws, in the same manner asin the balancewheels heretofore in use. For imparting to thebalancewheel the proper equilibrium, and for facilitating theadjustment, the curved compensating-bar D is balanced by acounter-weight, E, attached to the diametrical connecting-bar B, asshown in Fig. 1; or a second arc-shaped compensating-bar, D, symmetricalto the bar D, is used, as shown in Fig. 2.

My improved balance-wheel has the advantage that it can be manufacturedat less expense than those heretofore in use, and that it is lesssusceptible to exterior influences, while compensating the changes ofthe temperature in a reliable manner.

Having thus described my invention, I claim as new and desire to secureby Letters Patent-- 1. A balance-wheel for watches and chronometers,comprising two rim sections, a supporting-bar extending between therim-sections, and a compensating-bar extending be tween the rim-sectionsindependent of the supporting-bar, substantially as described.

2. A balancewheel for watches and chronometers, comprising two rimsections, a supporting-bar connecting the end of one rimsection with theopposite end of the other rim-section, and an arc-shapedcompensatingbar, independent of the supporting-bar connecting the otherends of the rim-sections, substantially as described.

3. A balance-wheel for watches and chronometers, comprising tworim-sections, a supportingbar connecting said rim-sections, anarc-shaped compensating-bar independent of the supporting-bar, alsoconnecting the rimsections, and a second arc-shaped compensating-barsymmetrical with the first, substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname in pres ence of two subscribing witnesses.

ANSEL S. BUOKELEVV.

W'itnesses:

PAUL GoErEL, SIDNEY MANN.

